224 AjsnsruAL report Smithsonian iNSTiTunoiN, 1942 



sanitizing process, also makes possible an effective dry sanitary 

 storage at all times. 



Various manually operated equipment and, of greater convenience, 

 mechanically operated equipment is available for sanitizing eating 

 and drinking utensils and keeping them sanitized until ready for 

 use. Cabinets easy to install and operate are marketed in many 

 attractive designs of different capacities, shapes, sizes, and colors, 

 and they are equipped with direct and properly reflected selected 

 ultraviolet rays. They operate automatically, so that each utensil 

 receives radiation for a definite period and on removal the current 

 is automatically disconnected. These units are very effective and 

 perform their function of sanitization more rapidly than other 

 methods. They are adapted for use not only for large-scale but 

 especially for small-scale operation at soda fountains, bars, and all 

 places where beverages are served; and here the cabinets provide an 

 attractive appearance as well as visual evidence of a safe and effective 

 sanitization procedure. 



OTHER APPLICATIONS 



Ultraviolet lamps have been installed and ultraviolet radiation 

 is being employed for the sanitization of many different materials 

 and environments. In hotels and in public and semipublic places, 

 this treatment is being applied to the sanitization of toilet seats. 

 The unit is so constructed that after each use the seat is auto- 

 matically raised into a cabinet containing ultraviolet equipment and 

 it is subjected to ultraviolet radiation. Properly constructed cab- 

 inets are in use for the sanitization of hair and shaving brushes, 

 combs, tooth brushes, and instruments and equipment used by phy- 

 sicians, dentists, chiropodists, barbers, and beauticians. 



Though previously mentioned, it is of sufficient importance to 

 direct your attention again to the fact that ultraviolet light does not 

 possess deep penetrating powers, and furthermore, a direct hit on the 

 germs by the proper ray is necessary to kill them. All equipment 

 therefore must be built and installed in a manner that will permit 

 the proper sanitizing ultraviolet raj^s to reach all surfaces of the ma- 

 terials and objects being treated. Unless this is accomplished, ultra- 

 violet irradiation will be uncertain and its value ineffective. 



AN ENLIGHTENED PUBLIC OPINION 



Your attention has been directed to the foregoing data because it 

 is important that each individual understand something concerning 

 the elements of disease control and understand better the problems 

 facing health workers. The scope of preventive medicine is ever 



